PREVALENCE OF SUBCLINICAL MASTITIS IN A DAIRY HERD IN BENI-SUEF GOVERNORATE | ||||
| Kafrelsheikh Veterinary Medical Journal | ||||
| Article 4, Volume 5, Issue 1, April 2007, Page 54-65 PDF (518.43 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/kvmj.2007.115854 | ||||
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| Authors | ||||
| A.M.S. Meshref* ; M.H.A. Tolba | ||||
| Food hygiene and control department Fac. of Vet. Med., Beni-Suef University | ||||
| Abstract | ||||
| A total of 115 dairy cows were screened by California mastitis test (CMT) to estimate the prevalence of subclinical mastitis in a dairy herd in Beni-Suef Governorate, as well as Somatic cell count ( SCC) of 28 bulk tank milk samples were estimated using De-Laval cell counter. Mean bulk tank SCC (BTSCC) was 9.5 x 105 + 7.5 x 104 with the highest frequency of distribution (64.3%) lies within the range of 5x 105 to 1 x 106 . The prevalence of subclinical mastitis was 15.2 % on an udder quarter basis and 39.1% on a cow basis. The organisms that were most frequently isolated were E.coli (35.4%), Str.bovis (21.5%), Str.agalactiae (10.8%), Coagulase negative Staphylococci (CNS) (7.7%), S.aureus (6.2%), Str.dysgalactiae (3.1%) and Str.faecalis (3.1%) for single infection while for double infection were Str.bovis with S.aureus (6.2%), Str.bovis with E.coli (3.1%), Str.agalactiae with S.aureus (1.5%) and Str.bovis with CNS (1.4%). In conclusion subclinical mastitis is a serious problem in dairy industry and its early detection is the corner stone in its control. | ||||
| Keywords | ||||
| subclinical mastitis; dairy herd; prevalence | ||||
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